%% Copyright (C) 1996, 1997 John W. Eaton
%%
%% This file is part of Octave.
%%
%% Octave is free software; you can redistribute it and/or modify it
%% under the terms of the GNU General Public License as published by
%% the Free Software Foundation; either version 2, or (at your option)
%% any later version.
%%
%% Octave is distributed in the hope that it will be useful, but
%% WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
%% General Public License for more details.
%%
%% You should have received a copy of the GNU General Public License
%% along with Octave; see the file COPYING.  If not, write to the Free
%% Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
%% 02110-1301, USA.

%% -*- texinfo -*-
%% @deftypefn {Function File} {} isscalar (@var{a})
%% Return 1 if @var{a} is a scalar.  Otherwise, return 0.
%% @seealso{size, rows, columns, length, isscalar, ismatrix}
%% @end deftypefn

%% Author: jwe

function retval = isscalar (x)

  if (nargin == 1)
    retval = prod (size (x)) == 1;
  else
    error;
  endif

end
